package com.java.controller;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;

@Controller
public class TestController {

    @RequestMapping("/err")
    public String a123(Model model){
        model.addAttribute("a","123");
        return "a";
    }
}
